What do you do to keep yourself busy when you're not working? What sort of fun stuff do ya do?

I'm 23 in a fairly new city where I haven't really found a solid group of friends yet. I love to interact with people, I don't have a problem socializing, my problem lies in finding opportunities to be able to socialize I guess. I'm at an interesting place in life, long story short, I've gotten to an amazing point in my recovery from a brain injury and it seems I'm finally ready to get out there and get the most out of this short life experience. I go to the gym, read, keep my apartment clean and organized, and now I need to find some hobbies I guess.